SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION OCI (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Condensed Financial Statements, Captions [Line Items]
Net income	$ 26,912	$ 24,196
Currency translation adjustments	(4,429)	506
Total comprehensive income	22,483	24,702
Net income attributable to noncontrolling interests	(26)	(534)
Currency translation adjustment attributable to noncontrolling interest	(130)	(201)
Total comprehensive income attributable to noncontrolling interests	(156)	(735)
Total comprehensive income attributable to Bristow Group	22,327	23,967
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net income	26,903	23,681
Currency translation adjustments	920	2,673
Total comprehensive income	27,823	26,354
Net income attributable to noncontrolling interests	(17)	(19)
Currency translation adjustment attributable to noncontrolling interest	0	0
Total comprehensive income attributable to noncontrolling interests	(17)	(19)
Total comprehensive income attributable to Bristow Group	27,806	26,335
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net income	22,143	19,002
Currency translation adjustments	0	0
Total comprehensive income	22,143	19,002
Net income attributable to noncontrolling interests	0	0
Currency translation adjustment attributable to noncontrolling interest	0	0
Total comprehensive income attributable to noncontrolling interests	0	0
Total comprehensive income attributable to Bristow Group	22,143	19,002
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net income	9,616	(748)
Currency translation adjustments	(6,947)	(5,044)
Total comprehensive income	2,669	(5,792)
Net income attributable to noncontrolling interests	(9)	(515)
Currency translation adjustment attributable to noncontrolling interest	(130)	(201)
Total comprehensive income attributable to noncontrolling interests	(139)	(716)
Total comprehensive income attributable to Bristow Group	2,530	(6,508)
Consolidations, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net income	(31,750)	(17,739)
Currency translation adjustments	1,598	2,877
Total comprehensive income	(30,152)	(14,862)
Net income attributable to noncontrolling interests	0	0
Currency translation adjustment attributable to noncontrolling interest	0	0
Total comprehensive income attributable to noncontrolling interests	0	0
Total comprehensive income attributable to Bristow Group	$ (30,152)	$ (14,862)